Four examiners can examine a certain number of answer papers in 10 days by working for 5 hours a day. For how many hours a day would 2 examiners have to work in order to examine twice the number of answer papers in 20 days?
Four examiners can examine a certain number of answer papers in 10 days by working for 5 hours a day. For how many hours a day would 2 examiners have to work in order to examine twice the number of answer papers in 20 days?
- 8
- 7.5
- 10
- 8.5
- None of The above
Answer: Option C
| Examiners | Days | Hours/Day | Papers |
| 4 | 10 | 5 | x |
| 2 | 20 | ? | 2x |
So, we required number of hours = so option C is the answer
Using chain rule,
(4×10×5)/X= (2×20×Y)/2X
X=10 hrs/day
Using chain rule,
(4×10×5)/X= (2×20×Y)/2X
X=10 hrs/day
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Four examiners can examine a certain number of answer papers in 10 days by working for 5 hours a day. For how many hours a day would 2 examiners have to work in order to examine twice the number of answer papers in 20 days?
Four examiners can examine a certain number of answer papers in 10 days by working for 5 hours a day. For how many hours a day would 2 examiners have to work in order to examine twice the number of answer papers in 20 days?
Four examiners can examine a certain number of answer papers in 10 days by working for 5 hours a day. For how many hours a day would 2 examiners have to work in order to examine twice the number of answer papers in 20 days?
Answer is 8 hours ...
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